Boiler.



W. H. WINSLOW.

BOILER,

I APPLICATION FILED DEC. 5, 1908 1,109,729. Patented Sept. 8, 1914.

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UNITED srafrgs PATENT OFFICE.

WILLIAM H. WINSLOW, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE STEAM POWER DEVICES COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

BOILER.

Specification of Letters Patent.

Patented Sept. 8, 1914.

Application filed December 5, 1908. Serial No. 466,084.

To all whom it may concern:

Be it known that I, WILLIAM H. Wins- Low, a citizen of the United States, resldmg at Chicago, in the county of Cook and State of IlllIlOlS, have invented a certain new and useful Improvement in Boilers, of which the following is a full, clear, conclse, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to boilers and has for its object improved construction and arrangement whereby the parts can be securely fused together.

In my co-pending applicatidn Serial No. 460,650, filed November 2, 1908, I have shown a boiler in which heads are provided having openings through which the flue ends extend, the flue ends being fused to the heads. In accordance with the invention in this application I expand the flue ends to form polygonal flanges. To build up the boiler a desired number of flues are arranged in parallel order with their polygonal flanged ends matched together. A shell has inturned flanges at its ends cut out to fit the exterior flanges of the grouped flues. The flanges are now heated at their engaging edges and suitable flux material applied, and the flanges are. fused together and to the inturned ends of the shell, these inturned ends and the flanges then forming the boiler heads. The flanges can be inclined inwardly slightly so that pockets or channels are formed between the engaging faces of the flanges, in which pockets or channels the flux material is applied and heated.

In the drawings Figure 1 is a top view o a boiler constructed in accordance with my invention. Fig. 2 is a sectional view taken on plane 2, 2 of Fig. 1. Fig. 3 shows a modified form of flue ends; and Fig. 4 shows anothermodified arrangement of flue ends.

The flues 1 0f the boiler have their ends expanded and shaped to form flanges 2, which may be hexagonal, as shown in Fig. 1, or square, as shown in Fig. 3, or of any other polygonal form which will enable the flanges to be grouped together to form a continuous surface. The flanges shown in Fig. 1 are formed by first expanding the end sections of the flues in any suitable manner and then turning back the ends to form the flan es 2, which incline inwardly from the vertical. When a boiler is to be assembled a suitable number of the flues are grouped together with their flanges touchmg at their inner ends 3, ..hereby V-shaped pockets or channels 4 will be formed between the flanges, as shown. The boiler shell 5 has inturned ends 6, which are milled or otherwise suitably cut at their inner edges to receive and to fit the outer flanges of the grouped flues. The inner edges of the inturned ends 6 may remain straight or can be beveled, as shown, pockets or channels 7 being formed between these inturned ends and the adjacent flue flanges. Suitable flux material is now melted into the pockets 4 and 7, and the flanges and the edges of the inturned shell ends are highly heated so that the flux material becomes fused with the flanges and the inturned shell ends. The flux material is preferably of slightly lower fusing temperature than the metal of the boiler parts, and this flux material becoming melted carries the heat intimately into engagement with the flanges to be connected together, and rapid and uniform fusion results. The ends of the flanges can, of course, be rounded by the flame so that the resistance at the flue ends is reduced to a minimum. To afford connection with the boiler one of the flues could be omitted. As shown in Fig. 2, the center flue is omitted and threaded plugs 8 and 9 are welded in place instead of the flanges of the omitted flue, said plugs serving to sup' port piping 10 and 10.

In Fig. 3 is shown an arrangement in which the flue ends are expanded to form square flanges 11, which are also inclined inwardly to leave V-shaped channels or pockets for receiving the. flux material. It is evident that any polygonal form of flange can be used. In Fig. 4 the flue ends are upset to form solid flanges 12, which may also be of any polygonal shape, and the, edges of these flanges may also be tapered to leave pockets or channels 13 for receiving the fiux material.

From the above it will appear that the boiler structure described above, comprises a plurality of originally separate parts which, by the fusing operation, are so joined together that the steel of which the boilers are made, is continuous throughout, and in the claims which form a part of this application I employ the term integral to refer to the parts thus united to desi nate the structure thus formed, meaning t ereby that the parts are so joined that the metal is continuous from one part to another and the structure produced is substantially homogeneous throughout.

Many other arrangements and forms are, of course, possible which will still be broadly covered by my invention. I do not, therefore, wish to be limited to the precise forms and arrangements which I have shown, and

' I desire to secure the following claims by Letters Patent:

'1. Ina boiler, the combination of a plurality of flues, each having a flange at each end formed integral therewith, each set of flanges lying in a common plane and fitted and fused together to form an end wall, a shell surrounding the flues, a flange at each end of the shell formed integral therewith, said shell flanges being formed to receive and to fit the end walls formed by the flue'flanges,"said shell flanges bein fused to said flue flanges whereby an integral boiler is formed.

2.In' a boiler, the combination of a plurality of flues each havin its ends expanded to form flanges, said u'es being grouped and the ends matched'and fused together to form an end wall, an inclosing shell parallel touthe flues havingits ends upset to form. inwardly extendingflanges, said shell flanges having a contour to receive and to fit the grouped end flanges of the flues and being fused to said flue flanges to "form the outer sections of said end walls.

3. Ina boiler, the combination of a shell,

flues extending throu h said shell, the end sections of .the flues eing expanded outwardly and the ends of the end sections being inclined inwardly to form polygonal flanges, the flanges engaging at their lower edges when the flues are grouped Within the shell and said engaging flanges forming;V,-shaped pockets or channels, and fused material in said pockets or channels connecting the parts into an integral structure.

4. In a bdiler, the combination of a plurality of flues having their ends expanded and then inclined inwardly to form polygonal flanges, there being pockets or channels formed between the inclined flanges when the flues are grou ed parallel together, a shell surrounding the flues, inturned flanges at the ends of the shell formed to engage with the flanges of the outer flues, there being also pockets or channels formed between said inturned flanges of the shell and the inclined flanges of the flues, and fused material in said ockets or channels connecting the flue anges and shell flanges into an integral structure, said inturned flanges of the shell and the flanges of the flues forming the boiler heads.

5. In a boiler, the combination of a plurality of flueshaving ends of polygonal conformation, and a shell having an inwardly extending edge conformed to. fit the flue ends, said parts together constituting an integral structure.

6. In a boiler, the combination of a plurality of steel flues having ends of polygonal conformation, and a steel shell having an inwardly extending edge conformed to fit the flue ends, said parts together constituting an integral structure.

7. A boiler structure comprising tubes having flanged ends and a shell having flanged ends engaging the tube flanges and constituting an integral structure therewith.

8. A boiler structure comprising steel tubes having flanged ends and a steel shell having flanged ends engaging the tube flanges and constituting an integral structure therewith.

. In witness whereof,,I hereunto subscribe my name this 3rd day of December A. D.

WILLIAM H. WINSLOl/V. Witnesses CHARLES J. SCHMIDT, GEORGE E. HIGHAM. 

